20010333011 has 4 divisors (see below), whose sum is σ = 20011240224. Its totient is φ = 20009425800.

The previous prime is 20010332959. The next prime is 20010333041. The reversal of 20010333011 is 11033301002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010333011 is a prime.

It is a super-2 number, since 2×20010333011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010333041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419675 + ... + 464916.

It is an arithmetic number, because the mean of its divisors is an integer number (5002810056).

Almost surely, 2^20010333011 is an apocalyptic number.

20010333011 is a deficient number, since it is larger than the sum of its proper divisors (907213).

20010333011 is an equidigital number, since it uses as much as digits as its factorization.

20010333011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907212.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 20010333011 its reverse (11033301002), we get a palindrome (31043634013).

The spelling of 20010333011 in words is "twenty billion, ten million, three hundred thirty-three thousand, eleven".